ci: add nightly dependency report

.github/workflows/nightly.yml

@@ -0,0 +1,20 @@
+name: nightly
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  nightly:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: maven
+      - name: Dependency Report
+        run: mvn --no-transfer-progress versions:display-dependency-updates